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LI Dongwei, CUI Hao, WANG Renhe. Nonlinear rheological constitutive model for frozen sand under complex stress paths and its engineering application[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(10): 1496-1501.
Citation: LI Dongwei, CUI Hao, WANG Renhe. Nonlinear rheological constitutive model for frozen sand under complex stress paths and its engineering application[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(10): 1496-1501.

Nonlinear rheological constitutive model for frozen sand under complex stress paths and its engineering application

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  • Published Date: October 14, 2008
  • By use of the testing method of stress paths,the behavior of construction of artificial freezing derrick foundation was simulated.It was shown by the results of triaxial creep experiments that the frozen soil was obviously dilatancty,and its volume strain should not be neglected.To fully reflect the creep deformation laws of frozen soil under complex stress paths,a nonlinear rheological constitutive model of frozen soil was put forward by using the basic elements.And the model was embedded in FEPG finite element program on the basis of the secondary developing technique for FEM.It was shown by the results of numerical simulation for field measurement that the deformation properties of dilatancy and volume strain of frozen soil could be reflected by the nonlinear rheological constitutive model very well,and it agreed well with the field measurement data,which could be used as references for the calculation and construction of frozen projects.
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